The book classification currently used by China Library is China Library Classification (referred to as Chinese Library Classification), which is now the fifth edition. But most libraries still use the fourth edition, which is actually similar.
Summary Table of China Library Classification (4th Edition) (Category Table above Level 2)
I Marxism-Leninism, Mao Zedong Thought and Deng Xiaoping Theory.
A 1 works of Marx and Engels
A2 Lenin's works
A3 Stalin's Works
A4 Mao Zedong's Works
A49 Deng Xiaoping's Works
Selected Works of Marx, Engels, Lenin, Stalin, Mao Zedong and Deng Xiaoping.
A7 Peace Biographies of Ma, Engles, Lenin, Stalin, Mao Zedong and Deng Xiaoping.
A8 Study and study Marxism-Leninism, Mao Zedong Thought and Deng Xiaoping XXX Theory.
Philosophy, religion
B0 philosophy theory
B 1 world philosophy
B2 China's philosophy
B3 Asian philosophy
B4 African philosophy
B5 European philosophy
B6 Oceania philosophy
B7 American philosophy
B80 thinking science
B8 1 logic (logic)
B82 Ethics (Morality)
B83 aesthetics
B84 psychology
B9 Religion
Introduction to social science
C0 Social Science Theory and Methodology
C 1 current situation and general situation of social sciences
C2 organs, organizations and meetings
C3 Social Science Research Methods
C4 Social Science Education and Popularization
C5 social science series, anthology, consecutive XXX publications.
C6 Social Science Literature Reference Book
[C7] Social Science Literature Retrieval Reference Books
C8 statistics
C9 1 sociology
C92 demography
C93 management science
[C94] System Science
C95 ethnology
C96 talent science
C97 labor science
Politics, law
D0 political theory
D 1 China * * * Producer
D33/37 * * Producers in various countries
D4 XXX Movement and Workers, Peasants, Youth and Women's Organizations
D5 World Politics
D6 Politics in China
D73/77 national politics
D8 Diplomacy and International Relations
D9 law
E military
E0 military theory
E 1 world military
E2 China Military
E3/7 Military affairs of various countries
E8 Strategy, Activities and Tactics
E9 military technology
E99 Military Topography and Military XXX Geography
F economy
F0 political economy
F 1 World Economic Survey, Economic History XXX and Economic Geography
F2 Economic planning and management
F3 agricultural economy
F4 industrial economy
F5 transportation economy
F6 post and telecommunications economy
F7 trade economy
F8 Finance and Finance
G. Culture, science, education and sports
G0 cultural theory
G 1 culture and cultural undertakings of all countries in the world
G2 Information and knowledge dissemination
G3 Science and scientific research
G4 education
G8 sports
J art
J0 Art Theory
J 1 overview of world art
J2 painting
J29 Calligraphy and Seal Cutting
JBOY3 sculpture
J4 photography art
J5 arts and crafts
[J59] Architectural Art
J6 music
J7 dance
J8 Drama Art
J9 movie and television art
H. Language and writing
H0 linguistics
H 1 Chinese
H2 China Minority Languages
H3 Common foreign languages
H4 Sino-Tibetan language family
H5 Altaic language family (Turkic-Mongolian XXX ancient-Tungusic language family)
H6 1 South Asian language family (Australasian language family XXX)
H62 Dravidian family (German XXX Ravida family)
H63 Austronesian language family (Malayan XXX- Polynesian language family)
H64 Northeast Asian Language
H65 Caucasian family
H66 Uralic language family
H67 Asian-African family XXX (Semite-Asian family)
H7 Indo-European family
H8 1 African languages
H83 American language
H84 Language of Oceania
H9 international auxiliary words
I. Literature
I0 literary theory
I 1 world literature
I2 China literature
I3/7 National Literature
History, geography
K0 historical theory
K 1 world history
K2 History of China
K3 Asian history
K4 African history
K5 European history
K6 History of Oceania
K7 American history
K8 1 Biography
K85 Cultural Relics Archaeology
K89 customs and habits
K9 geography
Introduction to natural science
Theory and method of natural science
Present situation and development of natural science
N2 Natural Science Institutions, Organizations and Conferences
N3 natural science research methods
N4 Natural Science Education and Popularization
N5 natural science series, anthology and even XXX serial publications.
N6 natural science reference books
[N7] Natural Science Literature Retrieval Tool
N79 Natural Science Non-book Materials and Visual XXX Listening Materials
N8 Natural Science Investigation and Investigation
N9 1 Natural Studies and Natural History
N94 system science
[N99] Information Science and Information Work
Mathematical science and chemistry
O 1 mathematics
O3 mechanics
O4 physics
O6 chemistry
O7 crystallography
P astronomy, earth science
P 1 astronomy
P2 drawing
P3 Geophysics
P4 Atmospheric Science (Meteorology)
P5 geology
P7 Oceanography
P9 Physical Geography
Q bioscience
Q 1 general biology
Q2 cell biology
Q3 genetics
Q4 physiology
Q5 biochemistry
Q6 biophysics
Q7 molecular biology
Q8 1 bioengineering (biotechnology)
[Q89] Environmental Biology
Q9 1 paleontology
Q93 Microbiology
botany
Q95 Zoology
Q96 entomology
Q98 Anthropology
Medicine and health
R 1 preventive medicine and hygiene
R2 China Medicine
R3 basic medicine
R4 clinical medicine
R5 internal medicine
R6 surgery
R7 1 obstetrics and gynecology
R72 Pediatrics
R73 Oncology
R74 neurology and psychiatry
R75 Dermatology and Venereology
R76 Otolaryngology
R77 ophthalmology
R78 stomatology
R79 Foreign Ethnic Medicine
R8 Special Medicine
R9 pharmacy
technology
TB general industrial technology
TD mining engineering
TE oil and gas industry
TF metallurgical industry
Metallurgy and metal technology
Machinery and instrument industry
TJ weapon industry
TK power engineering
TL atomic energy technology
TM electrical technology
TN radio electronics, telecommunications XXX technology
TP automation technology, computing technology XXX
TQ chemical industry
Light industry and handicraft industry
Figure construction engineering
Television water conservancy project
American agricultural science
S 1 basic agricultural science
S2 agricultural engineering
S3 Agronomy (Agronomy)
S4 Plant protection
S5 crop
S6 gardening
S7 forestry
S8 Animal husbandry, animal medicine, silkworm, hunting XXX, bee
S9 Aquatic products and fisheries
U transportation
U 1 integrated transportation
U2 railway transportation
U4 road transportation
U6 waterway transportation
[U8] Air transport
V. Aviation and aerospace
V 1 Aerospace Technology Research and XXX Exploration
V2 aviation
V4 Aerospace (Space Travel)
[V7] Aerospace Medicine
X. Environmental Science and Safety Science
X 1 basic theory of environmental science
X2 environmental comprehensive research
X3 environmental protection management
X4 disaster and its prevention
X5 Environmental Pollution and Its Prevention
X7 Three Wastes Treatment and Comprehensive Utilization
X8 Environmental Quality Assessment and Environmental XXX Monitoring
X9 safety science
Z comprehensive books
Z 1 series
Z2 Encyclopedias and Books
Z3 dictionary
Z4 Prose, Complete Works, Selected Works and Essays
Z5 Yearbooks and Yearbooks
Z6 periodicals and serial publications
Z8 Book Contents, Abstracts and Indexes
It can also be divided, which requires certain methods and professional learning. This is only divided into two levels. If you want to divide it, it depends on the content, title, language and so on of your book.